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I Stallworth Auto Detail -2- March 17 , 2011 <br /> Claim No . 12235 <br /> l <br /> B. Monitoring Well Information <br /> Well Designation Date Installed Screen Interval Depth to Water <br /> (feet bgs) (feet bgs) <br /> Aug 2010 <br /> MW- 1a Jan 06 19-39 28 . 09* <br /> MW- lb Jan 06 29-49 28 .42 <br /> MW- 1c Jan 06 120- 134 28 . 90 <br /> MW- 1d Jan 06 139- 149 29 . 29 <br /> MW-2 Jun 00 2949 28. 32 <br /> MW-3 Jun 00 20-40 29. 61 <br /> MW-4 Jun 00 19-39 28 . 38 <br /> MW-5 Jun 02 18-38 28 .74 <br /> MW-6 Jun 02 19-39 29 . 34 <br /> MW-7 Jun 07 60-70 30. 03 <br /> MW-8 Jun 07 59-69 29 .40* <br /> MW-9 Mar 08 60-70 29. 38 <br /> MW-10 Mar 08 60-70 29 . 59 <br /> MW-11 Mar 08 60-70 30 . 32 <br /> *sheen <br /> • . LAND USE DESIGNATION : residential and commercial <br /> • ESTIMATED WATER QUALITY OBJECTIVES (WQO' S) FOR SITE : Per the <br /> Water Quality Control Plan (Basin Plan) for the Sacramento River Basin and the <br /> San Joaquin River Basin (Fourth Edition) . <br /> IV. MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS <br /> Contaminant Soil m /k Water (u/L WQOs <br /> Maximum Latest Maximum Latest (ug/L) <br /> Jan 2011 <br /> TPH-g NA NA 470, 000 300, 000 5 <br /> TPH-d NA NA 140, 000 140, 000 56 <br /> Benzene NA NA 50 000 111000 0 . 15 <br /> Toluene NA NA 160, 000 120, 000 42 <br /> Eth (benzene NA NA 28, 000 143000 29 <br /> Xylenes NA NA 182,000 900000 17 <br /> MTBE NA NA 500 <1 5 <br /> TBA NA NA ND <10 12 <br /> 112-DCA NA NA 390 1 220 0. 5 <br /> NA: Not Analyzed, Not Applicable or Data Not Available <br /> mg/kg: milligrams per kilogram, parts per million <br /> ug/L: micrograms per liter, parts per billion <br /> WQOs: Water Quality Objectives <br /> V. FREE PRODUCT: sheen noted in MW-1A and MW-8 <br /> VI . SOIL AND GROUNDWATER REMEDIATION <br /> A. Soil Excavation : unknown volume <br /> California Environmenta/Protecdon Agency <br /> �o <br /> Qa <br /> Recycled Paper <br />